If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
BrowserQuest is a small multiplayer game inviting you to explore a world of adventure.
You play as a young warrior driven by the thrill of adventure. No princess to save here, just a dangerous world filled with treasures to discover. As you discover more of the world, you can try to complete the built in quests/achievements or fight against other players.